diff --git a/core/build.gradle.kts b/core/build.gradle.kts
index 97345bc0ce..7435990fb8 100644
--- a/core/build.gradle.kts
+++ b/core/build.gradle.kts
@@ -57,7 +57,7 @@ dependencies {
 
   testFixturesApi("dev.forst:ktor-api-key:2.2.4")
 
-  testFixturesApi("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+  testFixturesApi("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 }
 
 testing {
diff --git a/json-schema/build.gradle.kts b/json-schema/build.gradle.kts
index ffe2815854..1336a0c816 100644
--- a/json-schema/build.gradle.kts
+++ b/json-schema/build.gradle.kts
@@ -24,7 +24,7 @@ dependencies {
   api(projects.kompendiumEnrichment)
 
   implementation("org.jetbrains.kotlin:kotlin-reflect:1.9.25")
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")
diff --git a/oas/build.gradle.kts b/oas/build.gradle.kts
index 89e1c8d0e3..a2d141542c 100644
--- a/oas/build.gradle.kts
+++ b/oas/build.gradle.kts
@@ -22,7 +22,7 @@ dependencies {
 
   api(projects.kompendiumJsonSchema)
   api(projects.kompendiumEnrichment)
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")
diff --git a/playground/build.gradle.kts b/playground/build.gradle.kts
index 7f936cf712..737922f396 100644
--- a/playground/build.gradle.kts
+++ b/playground/build.gradle.kts
@@ -43,7 +43,7 @@ dependencies {
   // YAML
   implementation("com.charleskorn.kaml:kaml:0.59.0")
 
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
   implementation("org.jetbrains.kotlinx:kotlinx-datetime:0.6.1")
 
   implementation("joda-time:joda-time:2.13.0")
diff --git a/protobuf-java-converter/build.gradle.kts b/protobuf-java-converter/build.gradle.kts
index 5be5c9c9e9..f31d47690b 100644
--- a/protobuf-java-converter/build.gradle.kts
+++ b/protobuf-java-converter/build.gradle.kts
@@ -24,7 +24,7 @@ dependencies {
   implementation(projects.kompendiumJsonSchema)
   implementation("com.google.protobuf:protobuf-java:3.25.5")
   implementation("org.jetbrains.kotlin:kotlin-reflect:1.9.25")
-  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3")
+  implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.3")
 
   // Formatting
   detektPlugins("io.gitlab.arturbosch.detekt:detekt-formatting:$detektVersion")